added Predef.SOFT_BIND. This special token allows zero or more spaces between ordinary tokens. It is also used in the English RGL to attach the commas to the previous word.

src/compiler/GF/Compile/Compute/AppPredefined.hs

@@ -86,6 +86,8 @@ primitives = Map.fromList
                                          [] typeStr []))) Nothing)
   , (cBIND     , ResOper (Just (noLoc (mkProd -- Str
                                          [] typeStr []))) Nothing)
+  , (cSOFT_BIND, ResOper (Just (noLoc (mkProd -- Str
+                                         [] typeStr []))) Nothing)
   ]
   where
     fun from to = oper (mkFunType from to)

src/compiler/GF/Compile/Compute/Predef.hs

@@ -78,7 +78,8 @@ predefList =
      (cError,Error),
      -- Canonical values:
      (cPBool,PBool),(cPFalse,PFalse),(cPTrue,PTrue),(cInt,Int),
-     (cInts,Ints),(cNonExist,NonExist),(cBIND,BIND)]
+     (cInts,Ints),(cNonExist,NonExist)
+     ,(cBIND,BIND),(cSOFT_BIND,SOFT_BIND)]
     --- add more functions!!!
 
 delta f vs =
@@ -107,6 +108,7 @@ delta f vs =
       PTrue   -> canonical
       NonExist-> canonical
       BIND    -> canonical
+      SOFT_BIND->canonical
   where
     canonical = delay
     delay = return (VApp f vs) -- wrong number of arguments

src/compiler/GF/Compile/Compute/Value.hs

@@ -51,5 +51,6 @@ data Predefined = Drop | Take | Tk | Dp | EqStr | Occur | Occurs | ToUpper
              {- | Show | Read | ToStr | MapStr | EqVal -}
                 | Error
                 -- Canonical values below:
-                | PBool | PFalse | PTrue | Int | Ints | NonExist | BIND
+                | PBool | PFalse | PTrue | Int | Ints | NonExist 
+                | BIND | SOFT_BIND
                 deriving (Show,Eq,Ord,Ix,Bounded,Enum)

src/compiler/GF/Compile/GeneratePMCFG.hs

@@ -414,6 +414,8 @@ convertTerm opts sel ctype (Q (m,f))
     f == cNonExist                      = return (CStr [SymNE])
   | m == cPredef &&
     f == cBIND                          = return (CStr [SymBIND])
+  | m == cPredef &&
+    f == cSOFT_BIND                     = return (CStr [SymSOFT_BIND])
 
 convertTerm opts sel@(CProj l _) ctype (ExtR t1 t2@(R rs2))
                     | l `elem` map fst rs2 = convertTerm opts sel ctype t2

src/compiler/GF/Compile/PGFtoJS.hs

@@ -89,6 +89,7 @@ sym2js (SymKS t)       = new "SymKS"  [JS.EStr t]
 sym2js (SymKP ts alts) = new "SymKP"  [JS.EArray (map sym2js ts), JS.EArray (map alt2js alts)]
 sym2js SymNE           = new "SymNE"  []
 sym2js SymBIND         = new "SymKS"  [JS.EStr "&+"]
+sym2js SymSOFT_BIND    = new "SymKS"  [JS.EStr "&+"]
 
 alt2js (ps,ts) = new "Alt" [JS.EArray (map sym2js ps), JS.EArray (map JS.EStr ts)]
 

src/compiler/GF/Grammar/Predef.hs

@@ -31,6 +31,7 @@ cOverload = identS "overload"
 cUndefinedType = identS "UndefinedType"
 cNonExist = identS "nonExist"
 cBIND = identS "BIND"
+cSOFT_BIND = identS "SOFT_BIND"
 
 isPredefCat :: Ident -> Bool
 isPredefCat c = elem c [cInt,cString,cFloat]